Observation information
- date-obs: 2018-07-13
- time-obs: 16:20:48.300000000
- date-end: 2018-07-13
- time-end: 18:49:19.297900000
- obs_id: G08_028T01_9000002220
- exposure: 4876.93305948
- sourceid: GRS 1915+105
- observer: jsyadav
- ra_pnt: 288.7981
- dec_pnt: 10.94578
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1G08_028T01_9000002220_15091cztM0_level2.evt
| modeM0/AS1G08_028T01_9000002220_15091cztM0_level2_quad_clean.evt
|
| Size (bytes) | 546,454,080 | 100,304,640 |
| Size | 521.1 MB
| 95.7 MB
|
| Events in quadrant A | 3,485,521 | 650,325 |
| Events in quadrant B | 3,826,219 | 662,255 |
| Events in quadrant C | 4,074,020 | 640,373 |
| Events in quadrant D | 4,673,702 | 581,928 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14994 | 3 |
| B | 0 | 15869 | 2 |
| C | 0 | 16619 | 2 |
| D | 0 | 18720 | 2 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 148 | 0 |
| B | 0 | 148 | 0 |
| C | 0 | 148 | 0 |
| D | 0 | 148 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 17 | 0 |
| B | 0 | 17 | 0 |
| C | 0 | 17 | 0 |
| D | 0 | 17 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7221 | 92 | 1.274062% |
| B | 7221 | 116 | 1.606426% |
| C | 7221 | 95 | 1.315607% |
| D | 7221 | 531 | 7.353552% |
Noise dominated fraction
Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.
| Quadrant |
# 1 sec bins |
Bins with >0 counts |
Bins with >2000 counts |
High rate bins dominated by noise |
Noise dominated (total time) |
Noise dominated (detector-on time) |
Marked lightcurve |
| A | 8912 | 7222 | 0 | 0 | 0.00% | 0.00% |  |
| B | 8912 | 7222 | 0 | 0 | 0.00% | 0.00% |  |
| C | 8912 | 7223 | 0 | 0 | 0.00% | 0.00% |  |
| D | 8912 | 7223 | 471 | 471 | 5.29% | 6.52% |  |
Top noisy pixels
Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1
| Pixel properties |
Quadrant properties |
| Quadrant |
DetID |
PixID |
Counts |
Sigma |
Mean |
Median |
Sigma |
| A | 12 | 189 | 52217 | 285.0 | 893 | 873 | 180.2 |
| A | 0 | 226 | 7783 | 38.35 | 893 | 873 | 180.2 |
| A | 12 | 194 | 6365 | 30.48 | 893 | 873 | 180.2 |
| B | 3 | 64 | 226532 | 1313.44 | 890 | 869 | 171.8 |
| B | 10 | 245 | 117520 | 678.95 | 890 | 869 | 171.8 |
| B | 12 | 111 | 21413 | 119.57 | 890 | 869 | 171.8 |
| C | 3 | 9 | 338477 | 1669.47 | 872 | 877 | 202.2 |
| C | 3 | 233 | 335258 | 1653.55 | 872 | 877 | 202.2 |
| C | 13 | 61 | 6180 | 26.22 | 872 | 877 | 202.2 |
| D | 9 | 1 | 1453361 | 7069.09 | 845 | 819 | 205.5 |
| D | 2 | 234 | 22301 | 104.55 | 845 | 819 | 205.5 |
| D | 13 | 104 | 21069 | 98.55 | 845 | 819 | 205.5 |
Detector plane histogram (DPH)
Histogram calculated using DETX and DETY for each event in the final _common_clean file
| Quadrant A |
 |
 |
Quadrant B |
| Quadrant D |
 |
 |
Quadrant C |
Count rate plots and images
| Plot type |
Count rate plots |
Images |
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data. |
 |
 |
Quadrant-wise count rates
Data is divided into 100 sec bins |
 |
 |
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins |
 |
 |
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins |
 |
 |
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins |
 |
 |
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins |
 |
 |
Housekeeping plots
| Parameter |
Plot |
| CZT HV Monitor |  |
| D_VDD |  |
| Temperature 1 |  |
| Veto HV Monitor |  |
| Veto LLD |  |
| Alpha Counter |  |
| _CPM_Rate |  |
| CZT Counter |  |
| +2.5 Volts monitor |  |
| +5 Volts monitor |  |
| _ROLL_ROT |  |
| _Roll_DEC |  |
| _Roll_RA |  |
| Veto Counter |  |